EVE Spaceweather Data

We’re sad to report that EVE MEGS-A / SAM data stream has ended on Monday May 26, 2014 due to a power anomaly for MEGS-A CCD electronics. With SAM images being from MEGS-A CCD, both SAM solar X-ray images and MEGS-A spectra (6-37 nm) are not available now. The MEGS-A and SAM data from May 1, 2010 to May 26, 2014 will remain available from the EVE web site ( http://lasp.colorado.edu/home/eve/ ).

All the other EVE instruments are working well, ESP, MEGS-B, and MEGS-P. We’ll be working with the EVE science team to optimize the EVE observations with those instruments.

The Latest Level 0C Spectra are available for downloading. These are 1-minute averages of the solar spectrum. The file latest_EVS_L0C.txt is updated every minute and contains the last 15 spectra. It takes about 7 minutes from the time photons are measured by EVE until the data are available in this file as a 1-minute averaged solar spectrum.

Archived Level 0C Spectra are also available for downloading. The files contain a full days of 1 minute average spectra. We encourage users of historical data to use the 10-second spectra from the level 2 products instead.
ESP is used to estimate the soft X-ray solar irradiance centroid shown below.

A historical 1-minute irradiance peak and centroid dataset is also available after the end of each UT day ( prior to the MEGS A power anomaly on May 26, 2014 ).